133205522 has 8 divisors (see below), whose sum is σ = 200271036. Its totient is φ = 66448512.

The previous prime is 133205503. The next prime is 133205531. The reversal of 133205522 is 225502331.

It can be written as a sum of positive squares in 2 ways, for example, as 110271001 + 22934521 = 10501^2 + 4789^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×133205522² = 35487422182584968, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 76043 + ... + 77774.

Almost surely, 2^133205522 is an apocalyptic number.

133205522 is a deficient number, since it is larger than the sum of its proper divisors (67065514).

133205522 is a wasteful number, since it uses less digits than its factorization.

133205522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154252.

The product of its (nonzero) digits is 1800, while the sum is 23.

The square root of 133205522 is about 11541.4696637820. The cubic root of 133205522 is about 510.7096643581.

Adding to 133205522 its reverse (225502331), we get a palindrome (358707853).

The spelling of 133205522 in words is "one hundred thirty-three million, two hundred five thousand, five hundred twenty-two".